Asthma Medication Ratio Phenotypes in Elderly Women

Area of Science:

• Gerontology
• Pulmonology
• Epidemiology

Background:

• Population aging necessitates focused research on asthma management in the elderly.
• Understanding factors influencing asthma outcomes in older adults is crucial for public health.

Purpose of the Study:

• To evaluate the controller-to-total asthma medication ratio and its temporal fluctuations as predictors of adverse asthma-related outcomes in elderly women.
• To identify specific medication adherence profiles associated with asthma control and exacerbations in older women.

Main Methods:

• Latent class analysis of yearly controller-to-total asthma medication ratios (2004-2011) in 4,328 elderly women with asthma from the Asthma-E3N study.
• Multiple regression models assessed the association between medication ratio patterns and subsequent risks of uncontrolled asthma, attacks, exacerbations, and reduced quality of life.

Main Results:

• A short-term ratio below 0.5 correlated with increased risks of uncontrolled asthma, asthma attacks, and exacerbations.
• Five distinct long-term medication ratio profiles were identified, including "Never regular treatment" and "Treatment discontinuation."
• Profiles with no or interrupted maintenance therapy showed significantly higher risks of poor asthma outcomes compared to those with a "Persistent high ratio."

Conclusions:

• The level and long-term fluctuations of the controller-to-total asthma medication ratio are significant predictors of poor asthma-related outcomes in elderly women.
• Medication adherence patterns, particularly interruptions in maintenance therapy, are critical for managing asthma in older populations.